Multi-Factor Modeling Method of the Load Sharing Ratio under Moving Train Loads

Table 1

Key parameters of the vehicle model.

Location	Notation	Item	Value	Unit
Carbody	Mc	Mass of fully loaded carbody	4.81 × 10^4	kg
	Icxx	Side roll inertia moment of carbody	4.38 × 10^4	kg·m^2
	Icyy	Pitch inertia moment of carbody	8.88 × 10^5	kg·m^2
	Iczz	Yaw inertia moment of carbody	8.76 × 10^5	kg·m^2
Frame	Mf	Mass of frame	1.65 × 10^3	kg
	Ifxx	Side roll inertia moment of frame	1.09 × 10^3	kg·m^2
	Ifyy	Pitch inertia moment of frame	1.78 × 10^3	kg·m^2
	Ifzz	Yaw inertia moment of frame	248	kg·m^2
Wheelsets		Mass of wheelset	1.78 × 10^3	kg
	Iwxx	Side roll inertia moment of wheelset	1.05 × 10^3	kg·m^2
	Iwyy	Pitch inertia moment of wheelset	129	kg·m^2
	Iwzz	Yaw inertia moment of wheelset	1.05 × 10^3	kg·m^2
Axle box	Mb	Mass of axle box	84	kg
	Ibxx	Side roll inertia moment of axle box	1	kg·m^2
	Ibyy	Pitch inertia moment of axle box	3.9	kg·m^2
	Ibzz	Yaw inertia moment of axle box	3.38	kg·m^2
Suspension	k1	Vertical stiffness of primary suspension	7.50 × 10^5	N/m
	c1	Vertical damping of primary suspension	2.00 × 10^4	N·s/m
	k2	Vertical stiffness of secondary suspension	2.04 × 10^5	N/m
	c2	Vertical damping of secondary suspension	3.00 × 10^4	N·s/m